40496501TH Draft Version 27(2) Slit encoderAs the space motor rotates, it generates feedback pulse signals SPA-P and SPB-P. The MainLSI detects the edge pulses from these signals and multiplies the frequency to output theS720-P signals as the normalized timing to NHDC LSI to generate head drive timing.2.1.11 Line feedThe LF motor is locked by the current supplied from +12V according to the pulse duty of theLFCHOP-P signal during the stop period.It is driven by +44V application by the LFOVDV-P signal for line feed operation.SPA-PSPB-PEdge pulseS720-PUTILITY MODEITOUT 10CPIITOUT 12CPIITOUT 15CPIITOUT 17CPIITOUT 20CPI1/360"1/120"1/144"1/180"1/206"1/240"LFø1LFø2LFø3LFø4LFOVDV-PLFCHOP-PFigure 2.14Figure 2.15
